What's wrong with my Jackfruit?

[Obg1]

My Jackfruit was planted in late March.
I've been watering it everyday, it seems like the leaves are yellowish and it stopped growing.
Is that over watering issue?
I gave it fertilizer and iron.
Now I'm watering every other day.
Please help

[enomi]

It could be either a potassium or magnesium deficiency. Leaning more towards potassium.

An effective method to raise potassium levels is burying banana peels an inch below the soil's surface.